Well, I hate having to make a playlist all the time or having to get out of the shower to skip a song etc. I figure a good one will last a loooooong time so it is worth it to me.
I'm currently looking at:
http://www.amazon.com/Hipo-HIP-400BK.../dp/B005Z3GINK
but this one is cheaper, although I don't like it as much:
http://www.amazon.com/FreshETech-Wat...ef=pd_sim_e_15